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Markdown Reader

Preview Markdown, GFM tables, code blocks, and Mermaid diagrams online

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Features Overview

Preview Markdown, GFM tables, code blocks, and Mermaid diagrams online with all processing kept in your browser.

Tool Description

Free online Markdown previewer with GFM, Shiki code highlighting, Mermaid diagrams, table of contents, formatting, and HTML export. Everything runs locally in your browser.

Capabilities Checklist

  • Supports GitHub Flavored Markdown, task lists, tables, footnotes, and autolinks.
  • Uses Shiki for code highlighting and includes one-click copy for code blocks.
  • Supports Mermaid diagram preview, table of contents, formatting, and HTML export.
  • Does not parse embedded HTML by default, reducing XSS risk during preview and export.

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Frequently Asked Questions

Does this Markdown reader upload my content?
No. Previewing, formatting, Mermaid rendering, and HTML export run locally in the browser and do not actively upload Markdown content.
Why is embedded HTML disabled by default?
Embedded HTML increases XSS risk. The tool shows raw HTML as text by default to avoid executing untrusted content during preview or export.